package com.wyp168.serviceedu.listener;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.wyp168.servicebase.exceptionhandler.GuliException;
import com.wyp168.serviceedu.entity.EduSubject;
import com.wyp168.serviceedu.entity.excel.SubjectData;
import com.wyp168.serviceedu.service.EduSubjectService;
import jdk.internal.org.objectweb.asm.tree.analysis.AnalyzerException;

public class SubjectExcelListener extends AnalysisEventListener<SubjectData> {

    public EduSubjectService subjectService;

    public SubjectExcelListener() {
    }

    public SubjectExcelListener(EduSubjectService subjectService) {
        this.subjectService = subjectService;
    }

    //读取excel中的内容
    @Override
    public void invoke(SubjectData subjectData, AnalysisContext analysisContext) {
        System.out.println("***" + subjectData);
        if (subjectData == null || subjectData.getOneSubjectName() == null) {
            throw new GuliException(20001,"文件数据为空");
        }

        //一行一行读取，每次读取有两个值，第一个值一级分类，第二个值是二级分类
        //判断一级分类是否重复
        EduSubject existOneSubject = this.existOneSubject(subjectService, subjectData.getOneSubjectName());
        if (existOneSubject == null) { //表里面没有相同的记录，也就是说一级分类不重复
            existOneSubject = new EduSubject();
            existOneSubject.setParentId("0");
            existOneSubject.setTitle(subjectData.getOneSubjectName());    //设置一级分类名称
            subjectService.save(existOneSubject);
        }

        String pid = existOneSubject.getId();

        EduSubject existTwoSubject = this.existTwoSubject(subjectService, subjectData.getTwoSubjectName(),pid);

        if (existTwoSubject == null) {
            existTwoSubject = new EduSubject();
            existTwoSubject.setParentId(pid);
            existTwoSubject.setTitle(subjectData.getTwoSubjectName());    //设置二级分类名称
            subjectService.save(existTwoSubject);
        }
    }

    /**
     * 判断一级分类 是否重复
     * @param subjectService
     * @param name
     * @return
     */
    private EduSubject existOneSubject(EduSubjectService subjectService,String name) {
        QueryWrapper<EduSubject> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("title",name);
        queryWrapper.eq("parent_id","0");
        EduSubject oneSubject = subjectService.getOne(queryWrapper);
        return oneSubject;
    }

    /**
     * 判断二级分类 是否重复
     * @param subjectService
     * @param name
     * @return
     */
    private EduSubject existTwoSubject(EduSubjectService subjectService,String name,String pid) {
        QueryWrapper<EduSubject> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("title",name);
        queryWrapper.eq("parent_id",pid);
        EduSubject twoSubject = subjectService.getOne(queryWrapper);
        return twoSubject;
    }


    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {

    }
}
